My Inquiry
My Account
Analog Devices Inc. LTC1864LCS8#TRPBF
- Part No.:
- LTC1864LCS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1864LCS8#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,840
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1864LCS8#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 150ksps successive approximation ADC with true differential analog input, single 3V supply operation, and auto-shutdown power management. It features 450µA typical supply current at full speed, 82dB SNR, ±8 LSB INL, and MSOP-8 package - designed for high-precision, low-power data acquisition in portable instrumentation and isolated sensor interfaces.
For engineers reviewing the LTC1864LCS8#TRPBF datasheet, LTC1864LCS8#TRPBF pinout, LTC1864LCS8#TRPBF application, or LTC1864LCS8#TRPBF equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and two confirmed alternative parts - all grounded in official Linear Technology documentation and distributor specifications.
Technical Context
The LTC1864LCS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting unipolar differential input ranges from 0V to VREF (1V–3.6V). Its conversion cycle is initiated by a rising edge on CONV, completes in 3.7–4.66µs, and automatically enters sleep mode (10µA) when CONV remains high post-conversion.
It uses a 3-wire SPI/MICROWIRE-compatible serial interface: SDO outputs 16-bit data on SCK falling edges, while CONV low enables SDO and defines sampling window timing. The device requires no minimum data transfer rate and operates with external reference voltage applied to VREF pin - unlike the LTC1865L variant, it lacks internal MUX and SDI input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 part in 65,536 quantization granularity for precision measurement systems. |
| Sampling Rate | 150ksps maximum - supports real-time capture of signals up to ~20kHz full-linear bandwidth. |
| Supply Current | 450µA typ at 150ksps; drops to 10µA at 1ksps - enables battery-powered operation for >1 year in intermittent-sampling applications. |
| INL Error | ±8 LSB max - ensures monotonicity and <0.12% end-point linearity error over full temperature range. |
| SNR | 82dB - supports effective resolution of ~13.3 bits in noise-sensitive signal chains. |
| Reference Range | 1V to VCC (2.7–3.6V) - allows direct interfacing with low-voltage sensors without gain stages. |
| Digital Interface | SPI/MICROWIRE 3-wire - simplifies host connection to MCUs, FPGAs, or DSPs with minimal GPIO usage. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3.0mm × 3.0mm × 0.86mm body, 0.65mm pitch, lead coplanarity ≤0.102mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | External reference input | Defines full-scale span; must be low-noise and bypassed with ≥1µF to AGND - determines absolute accuracy and ratiometric flexibility. |
| IN+ (Pin 2) | Differential analog input (+) | High-impedance input sampled simultaneously with IN−; accepts 0V to VREF range - enables common-mode noise rejection in noisy environments. |
| IN− (Pin 3) | Differential analog input (−) | Paired with IN+; zero code occurs when IN+ − IN− = 0 - supports true differential sensing or single-ended operation with IN− grounded. |
| GND (Pin 4) | Analog ground | Primary return path for analog circuitry; must connect directly to analog ground plane - critical for achieving specified 82dB SNR. |
| VCC (Pin 8) | Positive supply | Single 2.7–3.6V supply; requires local 1µF tantalum bypass to GND - ripple >10mVpp degrades INL and SNR performance. |
| CONV (Pin 5) | Convert control input | Rising edge starts conversion; held high after completion triggers auto-shutdown - eliminates need for external power-gating logic. |
| SCK (Pin 7) | Serial clock input | Synchronizes 16-bit data shift-out on falling edge; supports DC to 8MHz - enables flexible timing with low-overhead MCU firmware. |
| SDO (Pin 6) | Serial data output | Tri-state output enabled by CONV low; drives 16-bit result MSB-first - compatible with standard SPI master receivers without level-shifting. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input | Rejects common-mode noise up to 20kHz bandwidth - essential for industrial transducer interfaces with long cable runs. |
| Auto shutdown at low sampling rates | Reduces ICC from 450µA to 10µA at 1ksps - extends battery life in IoT node applications without software intervention. |
| No minimum data transfer rate | Allows indefinite idle periods between conversions - simplifies low-duty-cycle firmware design and eliminates clock gating complexity. |
| 16-bit upgrade path from 12-bit LTC1860L/LTC1861L | Pin-compatible replacement with identical MSOP-8 footprint - enables resolution upgrade without PCB redesign. |
| High input impedance & reduced span support | Accepts 1V full-scale inputs and interfaces directly with micro-power op amps (e.g., LT1469) - eliminates external gain/level-shift stages. |
Applications
| Portable Instrumentation | Isolated Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeter or environmental sensor logger operating from coin-cell battery. IC Role / Device Role / Timing Role: Primary analog-to-digital converter capturing sensor outputs (e.g., thermistor, pressure bridge) at 1–10ksps with ratiometric reference. Use Value: 450µA active current and 10µA sleep current enable multi-year battery life; differential input rejects EMI from display backlight and switching regulators. |
Use Scenario: Industrial current/voltage monitor with opto-isolated digital interface to PLC controller. IC Role / Device Role / Timing Role: Isolated-side ADC digitizing shunt-based measurements, referenced to local low-noise LDO output. Use Value: 1V–3.6V reference flexibility allows matching to isolated 3.3V rail; 82dB SNR ensures <0.05% RMS measurement error across 4–20mA range. |
| Low-Power Sensor Interface | Compact Signal Conditioning |
|
Use Scenario: Wireless vibration sensor node using MEMS accelerometer with ultra-low duty cycle. IC Role / Device Role / Timing Role: High-resolution digitizer triggered by wake-up interrupt, sampling for <1ms before returning to sleep. Use Value: Conversion time of 4.66µs + auto-shutdown minimizes active time; 16-bit resolution resolves sub-millig acceleration changes. |
Use Scenario: Tiny 2-chip front-end combining LTC6910-1 programmable-gain amplifier and LTC1864LCS8#TRPBF ADC. IC Role / Device Role / Timing Role: Final-stage ADC in compact signal chain where gain stage sets dynamic range and LTC1864L sets precision ceiling. Use Value: Pin compatibility with 12-bit LTC1860L allows drop-in resolution upgrade; 16-bit ENOB preserves amplifier's 90MHz bandwidth fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1864LIMS8 | Same architecture and pinout; extended –40°C to 85°C operating range vs. 0°C to 70°C for LTC1864LCS8#TRPBF. | Required for automotive cabin modules or outdoor industrial enclosures where ambient exceeds 70°C. | Select LTC1864LIMS8 when guaranteed operation beyond commercial temperature limits is mandatory. |
| AD7682BCPZ-RL7 | 16-bit, 250ksps SAR ADC in 20-lead LFCSP; requires external reference and different SPI framing (no CONV pin - uses CNV). | Higher speed and smaller package, but needs layout revision and firmware adaptation for timing and data protocol. | Choose AD7682BCPZ-RL7 only when sampling rate >150ksps or board space constraints outweigh redesign effort. |
Compared with LTC1864LIMS8, the LTC1864LCS8#TRPBF trades extended temperature capability for lower cost in commercial-grade designs; versus AD7682BCPZ-RL7, it offers simpler timing control and drop-in replacement for existing LTC1860L footprints - critical for rapid prototyping and legacy system upgrades.
Availability
LTC1864LCS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, isolated data acquisition, and low-power sensor interface applications requiring stable component supply and long-term manufacturability.
Supply support for LTC1864LCS8#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains full product support, datasheets, and application notes for the LTC series - recognized for high-precision analog ICs targeting demanding industrial and instrumentation markets.
The LTC1864LCS8#TRPBF belongs to Linear's low-power, high-resolution SAR ADC family, engineered specifically for battery-operated and space-constrained measurement systems where accuracy, power efficiency, and ease of integration are co-prioritized.
FAQ
What is the maximum sampling frequency of the LTC1864LCS8#TRPBF?
The LTC1864LCS8#TRPBF supports a maximum sampling frequency of 150ksps, with guaranteed conversion time of 3.7–4.66µs across its full operating temperature range. At this rate, the device draws 450µA typical supply current and achieves 82dB SNR. Reducing sampling rate proportionally lowers power consumption due to automatic shutdown between conversions.
Does the LTC1864LCS8#TRPBF require an external reference voltage?
Yes, the LTC1864LCS8#TRPBF requires an external reference voltage applied to the VREF pin (Pin 1). It supports reference voltages from 1V to VCC (2.7–3.6V), enabling ratiometric operation with sensor bridges or precision fixed references like the LT1460. Unlike the LTC1865L SO-8 variant, the LTC1864LCS8#TRPBF does not tie VREF internally to VCC.
Is the LTC1864LCS8#TRPBF pin-compatible with older 12-bit ADCs?
Yes, the LTC1864LCS8#TRPBF is pin-compatible with the 12-bit LTC1860L and LTC1861L in the same MSOP-8 package. This allows direct replacement to upgrade resolution from 12-bit to 16-bit without PCB layout changes - preserving existing signal routing, bypassing, and grounding schemes while improving measurement fidelity.
What digital interface protocol does the LTC1864LCS8#TRPBF use?
The LTC1864LCS8#TRPBF uses a 3-wire SPI/MICROWIRE-compatible serial interface with dedicated CONV, SCK, and SDO lines. It does not require SDI or chip select. Data is shifted out MSB-first on SDO synchronized to SCK falling edges, and conversion is initiated by a rising edge on CONV - eliminating protocol overhead and simplifying MCU firmware implementation.
Can the LTC1864LCS8#TRPBF operate with a 1V reference voltage?
Yes, the LTC1864LCS8#TRPBF is fully specified to operate with reference voltages as low as 1V, maintaining 16-bit resolution and ±8 LSB INL performance. This enables direct interfacing with low-voltage sensors and micropower references, reducing or eliminating the need for external gain stages - a key enabler for ultra-low-power signal chains.
LTC1864LCS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 150k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1864LCS8#TRPBF FAQ
1.How can I place an order for LTC1864LCS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1864LCS8#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC1864LCS8#TRPBF reliable?
The price and inventory of LTC1864LCS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1864LCS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1864LCS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1864LCS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1864LCS8#TRPBF?
LTC1864LCS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1864LCS8#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC1864LCS8#TRPBF?
For technical support, including LTC1864LCS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1864LCS8#TRPBF requirements.
6.How does Aetrix verify that LTC1864LCS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1864LCS8#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC1864LCS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1864LCS8#TRPBF?
All LTC1864LCS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1864LCS8#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC1864LCS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1864LCS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1864LCS8#TRPBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
